Not only is Python one of the most popular and easiest to learn of all programming languages, but it's also one of the most important for artificial intelligence and machine learning. So it will be in ...

To query a user's mobile phone and WeChat number, the following SQL statement can be used.

This article is adapted from an edition of our Off the Charts newsletter originally published in October 2021. Off the Charts is a weekly, subscriber-only guide to The Economist’s award-winning data ...